Segment Reporting - Reconciliation of Financial Measures of Segments to Consolidated Totals (Details) $ in Millions		1 Months Ended	3 Months Ended				9 Months Ended
	Sep. 22, 2025 USD ($)	Jun. 30, 2025 client	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) claim	Sep. 30, 2024 USD ($)
Segment Reporting Information [Line Items]
Revenues from external customers			$ 102,239			$ 94,878	$ 294,735	$ 273,701
Net investment income (loss)			632			550	1,639	1,398
Total revenues			102,871			95,428	296,374	275,099
Less: Net realized capital gains (losses)			(11)			19	(59)	(89)
Cost of products sold			57,045			52,948	162,107	151,019
Health care costs			32,020			29,922	92,472	85,578
Reconciliation of principal measure of segment performance to consolidated operating loss:
Amortization of intangible assets			500			507	1,493	1,522
Net realized capital losses (gains)			11			(19)	59	89
Acquisition-related transaction and integration costs			27			41	100	203
Goodwill impairment			5,725			0	5,725	0
Health Care Delivery clinic closure charge			83				83
Litigation charges			320					100
Office real estate optimization charges						17	10	17
Restructuring charges			0			1,169	0	1,169
Loss on Accountable Care assets							288
Operating income (loss)			(3,207)			832	2,548	6,148
Gain on deconsolidation of subsidiary	$ 483		483			0	483	0
Interest expense			(784)			(752)	(2,332)	(2,200)
Other income			26			25	83	74
Income (loss) before income tax provision			(3,482)			105	782	4,022
Depreciation and amortization			1,134			1,161	$ 3,459	3,450
Number of claims for which litigation charges were recorded \| claim							2
Opioid Litigation
Reconciliation of principal measure of segment performance to consolidated operating loss:
Litigation charges							$ 320
Legacy Litigation
Reconciliation of principal measure of segment performance to consolidated operating loss:
Litigation charges							1,220
U.S. ex rel. Bassan et al. v. Omnicare, Inc. and CVS Health Corp.
Reconciliation of principal measure of segment performance to consolidated operating loss:
Litigation charges				$ 542	$ 387
United States Ex Rel. Behnke v. CVS Caremark Corporation, Et Al.
Reconciliation of principal measure of segment performance to consolidated operating loss:
Litigation charges				$ 291
Number of clients \| client		2
Health Care Benefits
Segment Reporting Information [Line Items]
Revenues from external customers			35,431			32,555	105,667	96,577
Net investment income (loss)			513			423	1,307	1,076
Reconciliation of principal measure of segment performance to consolidated operating loss:
Goodwill impairment							0
Depreciation and amortization			375			407	1,199	1,196
Health Services
Segment Reporting Information [Line Items]
Revenues from external customers			42,354			40,794	120,568	115,954
Net investment income (loss)			(1)			(1)	10	(3)
Reconciliation of principal measure of segment performance to consolidated operating loss:
Goodwill impairment							5,725
Loss on Accountable Care assets							288
Depreciation and amortization			260			267	781	792
Pharmacy & Consumer Wellness
Segment Reporting Information [Line Items]
Revenues from external customers			24,441			21,515	68,460	61,127
Net investment income (loss)			0			0	0	0
Reconciliation of principal measure of segment performance to consolidated operating loss:
Goodwill impairment							0
Depreciation and amortization			396			387	1,169	1,164
Corporate/ Other
Segment Reporting Information [Line Items]
Revenues from external customers			13			14	40	43
Net investment income (loss)			120			128	322	325
Reconciliation of principal measure of segment performance to consolidated operating loss:
Depreciation and amortization			103			100	310	298
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net investment income (loss)			0			0	0	0
Total revenues			(18,735)			(14,262)	(51,937)	(40,547)
Intersegment Eliminations \| Health Care Benefits
Segment Reporting Information [Line Items]
Total revenues			(49)			(18)	(87)	(54)
Intersegment Eliminations \| Health Services
Segment Reporting Information [Line Items]
Total revenues			(6,913)			(3,336)	(18,603)	(10,634)
Intersegment Eliminations \| Pharmacy & Consumer Wellness
Segment Reporting Information [Line Items]
Total revenues			(11,773)			(10,908)	(33,247)	(29,859)
Operating Segments and Corporate/ Other
Segment Reporting Information [Line Items]
Total revenues			121,606			109,690	348,311	315,646
Adjusted operating income (loss)			3,459			2,547	11,846	9,248
Operating Segments \| Health Care Benefits
Segment Reporting Information [Line Items]
Net investment income (loss)			513			423	1,307	1,076
Total revenues			35,993			32,996	107,061	97,707
Less: Net realized capital gains (losses)			33			(1)	(1)	(82)
Cost of products sold			0			0	0	0
Health care costs			31,319			29,443	90,696	84,359
Other segment items			4,327			4,478	12,751	12,684
Adjusted operating income (loss)			314			(924)	3,615	746
Reconciliation of principal measure of segment performance to consolidated operating loss:
Net realized capital losses (gains)			(33)			1	1	82
Operating Segments \| Health Services
Segment Reporting Information [Line Items]
Net investment income (loss)			(1)			(1)	10	(3)
Total revenues			49,266			44,129	139,181	126,585
Less: Net realized capital gains (losses)			0			0	15	0
Cost of products sold			45,230			40,381	128,425	116,678
Health care costs			1,291			936	3,439	2,428
Other segment items			695			608	2,074	1,997
Adjusted operating income (loss)			2,050			2,204	5,228	5,482
Reconciliation of principal measure of segment performance to consolidated operating loss:
Net realized capital losses (gains)			0			0	(15)	0
Co-payments			2,400			2,700	8,800	8,900
Operating Segments \| Pharmacy & Consumer Wellness
Segment Reporting Information [Line Items]
Net investment income (loss)			0			0	0	0
Total revenues			36,214			32,423	101,707	90,986
Less: Net realized capital gains (losses)			0			0	0	0
Cost of products sold			29,647			26,032	83,005	72,627
Health care costs			0			0	0	0
Other segment items			5,089			4,795	14,573	14,343
Adjusted operating income (loss)			1,478			1,596	4,129	4,016
Reconciliation of principal measure of segment performance to consolidated operating loss:
Net realized capital losses (gains)			0			0	0	0
Corporate/ Other \| Corporate/ Other
Segment Reporting Information [Line Items]
Net investment income (loss)			120			128	322	325
Total revenues			133			142	362	368
Less: Net realized capital gains (losses)			(44)			20	(73)	(7)
Cost of products sold			0			0	0	0
Health care costs			47			49	133	142
Other segment items			513			402	1,428	1,229
Adjusted operating income (loss)			(383)			(329)	(1,126)	(996)
Reconciliation of principal measure of segment performance to consolidated operating loss:
Net realized capital losses (gains)			$ 44			$ (20)	$ 73	$ 7

CVS HEALTH Corp 10-Q